feat(modules): relocate marketplace browser to super-admin context

The module marketplace browser UI (ModuleIndexView, ModuleDetailView,
ModuleCard, the four-step installer store) was filed under
features/company/modules/ only by historical accident — it's authorized via
the manage modules ability (super-admin-only) and conceptually belongs in the
admin context, not the company context.

- Move features/company/modules/{store.ts, views/ModuleIndexView.vue,
  views/ModuleDetailView.vue, components/ModuleCard.vue} to
  features/admin/modules/.
- Update hardcoded /admin/modules/... paths in the moved files to
  /admin/administration/modules/... so the breadcrumbs and ModuleCard
  navigation target the new admin-context routes.
- Tighten the four-step installer's silent catch {} blocks in the moved
  store.ts: errors were being swallowed, now they dispatch through the
  global notification store instead.
- New features/admin/modules/routes.ts declares admin.modules.index +
  admin.modules.view as children of /admin/administration with
  meta.isSuperAdmin: true.
- features/admin/{index,routes}.ts re-export and mount the relocated routes.
- config/invoiceshelf.php gains a new AdminModules entry in admin_menu
  pointing at /admin/administration/modules with super_admin_only: true.
- The dev-gated navigation.modules entry in main_menu is replaced (not
  deleted) with a non-gated entry pointing at the new company-context
  Active Modules index page that lands in the next commit. The
  ability is set to manage modules so non-owners can't see it.

The new company-context Active Modules index, schema-driven settings page,
and dynamic sidebar group are introduced in subsequent commits.

resources/scripts/features/admin/modules/routes.ts

@@ -0,0 +1,34 @@
+import type { RouteRecordRaw } from 'vue-router'
+
+const ModuleIndexView = () => import('./views/ModuleIndexView.vue')
+const ModuleDetailView = () => import('./views/ModuleDetailView.vue')
+
+/**
+ * Super-admin marketplace browser routes.
+ *
+ * These are mounted as children of `/admin/administration` in features/admin/routes.ts,
+ * meaning they require `meta.isSuperAdmin` and the admin-mode bootstrap.
+ *
+ * Company-context module routes (the read-only Active Modules index and the
+ * schema-rendered settings page) live in features/company/modules/routes.ts.
+ */
+export const adminModuleRoutes: RouteRecordRaw[] = [
+  {
+    path: 'modules',
+    name: 'admin.modules.index',
+    component: ModuleIndexView,
+    meta: {
+      isSuperAdmin: true,
+      title: 'modules.title',
+    },
+  },
+  {
+    path: 'modules/:slug',
+    name: 'admin.modules.view',
+    component: ModuleDetailView,
+    meta: {
+      isSuperAdmin: true,
+      title: 'modules.title',
+    },
+  },
+]